American heart journal, Volume 166, Issue 5, 24 4 2013, Pages e43 Reply to letter to the editor by Koza et al. Kooiman J, le Haen PA, Gezgin G, de Vries JP, Boersma D, Brulez HF, Sijpkens YW, van der Molen AJ, Cannegieter SC, Hamming JF, Huisman MV